In 2010, An Younggil said:
He loves fighting and he doesn’t miss cutting points. He plays aggressively and roughly as he is a genuine infighter and especially good at local battles.
I once played him officially in 2007. I was planning to go abroad to spread Go, and I thought it could be my last game on main tournament before leaving. I tried to play my best because of that reason, and the opening was alright up to the middle game. When I felt I was reading the game, I made a simple mistake in the center, and I lost badly without any chance afterwards. I felt his powerful reading through the whole game.
- 2004: 1-dan
- 2005: 2-dan
- 2006: 3-dan
- 2007: 4-dan
- 2009: 5-dan, March 30th
- 2009: 6-dan, August 20th
- 2010: 7-dan, March 16th
- 2013: 8-dan, March 20th
- 2013: 9-dan, April 22th, for winning the 18th GS Caltex Cup
- 2007: Korean Baduk League, Team Yeongnam Ilbo
- 2009: 5th Korean Prices Information Cup (2-0, Lee Changho)
- 2012: Korean Baduk League, Team Hangame
- 2013: 18th GS Caltex Cup (3-0, Lee Sedol)
- 2013: 4th Olleh KT Cup (3-0, Mok Jinseok)
- 2014: 19th GS Caltex Cup (3-0, Choi Cheolhan)
- 2014: 19th Samsung Cup (2-0, Tang Weixing)
- Korean Baduk Association profile: http://www.baduk.or.kr/common/pop_gisa.asp?gno=2478
- The book Weird and Wonderful - Volume 1 - Extraordinary Moves by Professional Go Players analyzes a game from 2014 in which Kim Jiseok 9p played tenuki four times against his opponent Guo Yuzheng 4p, who tried to kill his group but failed and lost.